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Maple Eyespot Gall: Colorful but Harmless Midge Damage

Bright red-yellow rings on maple leaves are eyespot galls caused by a tiny midge (fly). Larval feeding triggers the colorful hormone response. Purely cosmetic; no harm to tree. Just a neat nature observation.

Maple eyespot gall close-up Eyespot gall on multiple leaves Eyespot gall detail

About Gardening: Oak Galls in Arizona: Tiny Wasps, Harmless Growths; Maple Decline Misdiagnosed as Gall Disease: Root Binding Real Issue; Maple Leaf Tatter: Early Injury, Not Ongoing Pest; Maple Crown Gall: Bacterial Disease with Organic Treatment Option; Elm Finger Gall vs. Maple Bladder Gall: Identification and Management; Maple Bladder Gall: No Cure Once Formed, But Tree Is Fine; Bladder Gall Mites on Maple: Prevention Timing; Solving Honeysuckle Flower Blight and Holly Root Competition; Lime Under Maple Trees: Minnesota Perspective; Maple Trees: Species Diversity, Uses, and Landscape Value

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